US20050259542A1 - Reproduction device and method, recording medium, and program - Google Patents
Reproduction device and method, recording medium, and program Download PDFInfo
- Publication number
- US20050259542A1 US20050259542A1 US10/524,444 US52444405A US2005259542A1 US 20050259542 A1 US20050259542 A1 US 20050259542A1 US 52444405 A US52444405 A US 52444405A US 2005259542 A1 US2005259542 A1 US 2005259542A1
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- Prior art keywords
- recorded
- recording medium
- reading
- playback
- file
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0638—Organizing or formatting or addressing of data
- G06F3/064—Management of blocks
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/061—Improving I/O performance
- G06F3/0613—Improving I/O performance in relation to throughput
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0673—Single storage device
- G06F3/0674—Disk device
- G06F3/0676—Magnetic disk device
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
- G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
- G11B27/327—Table of contents
- G11B27/329—Table of contents on a disc [VTOC]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
Definitions
- the present invention relates to a playback apparatus and method, a recording medium, and a program. More particularly, the present invention relates to a playback apparatus and method, which are suitably used when a data file recorded on an information recording medium is to be played back in compliance with an FAT (File Allocation Table) scheme, to a recording medium for use therewith, and to a program therefor.
- FAT Fe Allocation Table
- an FAT scheme As a format for recording a data file on an information recording medium such as a hard disk or playing it back, an FAT scheme has been known.
- the FAT scheme is supported as a standard in personal computers in which an OS (Operating System) such as MS-DOS and WINDOWS (registered trademark) is installed. Therefore, it may be said that the FAT scheme is the most widely used file format scheme.
- the FAT method is described below. As shown in FIG. 1 , the recording area of an information recording medium in compliance with the FAT scheme is divided into physical recording units called “sectors”. Each sector has a predetermined capacity (for example, 512 bytes) and is assigned a sector address. Access to the information recording medium is performed in units of sectors.
- a predetermined capacity for example, 512 bytes
- the recording area of the information recording medium is divided into logical recording units called “clusters” formed of a plurality of sectors (for example, 64 sectors). Each cluster is assigned a cluster address. Reading from and writing to the information recording medium are performed in units of clusters.
- the file when the size of a file to be recorded is larger than the capacity of one cluster, the file is divided into a plurality of clusters and is recorded. On the contrary, when the size of the file to be recorded is smaller than or equal to the capacity of one cluster, only the file concerned is recorded in one cluster.
- a file allocation table (hereinafter referred to as an “FAT”) that is referred to and updated when a file is read and written, and a directory entry are recorded.
- each space of the FAT is assigned an FAT address.
- start cluster address the cluster address of the cluster in which the data of the start portion of the file concerned (hereinafter referred to as a “start cluster address”), and the file size are recorded.
- the cluster address of the cluster in which the FAT is recorded, and the cluster address of the cluster in which the directory entry is recorded are contained in the management information that is recorded in the first one sector of the information recording medium.
- the management information also, the capacity of the information recording medium, and the information indicating as to how many sectors one cluster is formed of are contained.
- a file A is divided into files A- 1 to A- 18 , and the files are recorded in the corresponding cluster addresses CL 1 , CL 2 , CL 3 , CL 5 , CL 6 , CL 110 , CL 112 , CL 113 , CL 114 , CL 115 , CL 116 , CL 119 , CL 320 , CL 323 , CL 324 , CL 328 , CL 329 , and CL 330 of the information recording medium.
- the cluster address CL 2 is recorded in the space of the FAT address 1 ; in the space of the FAT address 2 , the cluster address CL 3 is recorded; and in the space of the FAT address 3 , the cluster address CL 5 is recorded.
- the description is omitted hereafter, finally, in the space of the FAT address 330 , the EOF is recorded.
- the directory entries of the information recording medium are referred to, and the start cluster address of the file A (in this case, the cluster address CL 1 ) is read.
- the FAT recorded on the information recording medium is copied to a memory (DRAM (Dynamic Random Access Memory), etc.) contained in the reading apparatus. Since the capacity of the information recording medium is large, when the size of the FAT is larger than the size of the memory incorporated in the reading apparatus, a part of the FAT recorded on the information recording medium, the part containing a space corresponding to the cluster address of the cluster in which the beginning of the file A (the file A- 1 ) is recorded (hereinafter referred to as a “partial FAT”), is copied to the memory inside the reading apparatus.
- DRAM Dynamic Random Access Memory
- the FAT is copied to the memory incorporated in the reading apparatus, and thereafter, the reading of the file A- 1 is started from the cluster of the cluster address CL 1 . Then, concurrently with the reading of the file A- 1 , the FAT address 1 of the FAT of the incorporated memory is referred to, and the cluster address of the cluster in which the file A- 2 is recorded (in this case, the cluster address CL 2 ) is detected. After the reading of the file A- 1 is completed, the reading of the file A- 2 is started from the cluster of the cluster address CL 2 .
- the files A- 3 to A- 18 are also read.
- the file A recorded on the information recording medium in the state shown in FIG. 2 is stream data of an AV (Audio and Visual) signal coded by, for example, an MPEG-2 (Moving Pictures Experts Group 2) method.
- AV Audio and Visual
- MPEG-2 Motion Pictures Experts Group 2
- the problem which occurs when fast backward playback is performed is caused by the fact that the tracking of the FAT in the reverse direction is more difficult than the tracking of the FAT in the forward direction.
- the cluster address CL 5 in the forward direction from the cluster address CL 3 it is only necessary to refer to the space of the FAT address 3 .
- An object of the present invention is to be capable of reading streaming data of an AV signal, etc., recorded on an information recording medium in compliance with the FAT scheme continuously without delay.
- the playback apparatus of the present invention includes specification means for specifying a data file to be played back; storage means for reading and storing a first table recorded on the information recording medium; generation means for generating, based on the first table recorded by the storage means, a second table in which unit recording area addresses of the information recording medium, which are used to record the data file specified by the specification means, are recorded in the forward direction; holding means for holding the second table generated by the generation means; reading means for reading the data from the information recording medium in accordance with the specified unit recording area addresses; and indication means for indicating, to the reading means, the unit recording area addresses to be read by referring to the second table held by the holding means.
- the indication means may read the unit recording area addresses, which are recorded in the second table, one-by-one in the forward direction, and may indicate the unit recording area addresses to the reading means.
- the indication means may read the unit recording area addresses recorded in the second table every predetermined number of the unit recording area addresses in the forward direction, and may indicate the unit recording area addresses to the reading means.
- the indication means may read the unit recording area addresses recorded in the second table every predetermined number of the unit recording area addresses in the reverse direction, and may indicate the unit recording area addresses to the reading means.
- the playback method of the present invention includes a specification step of specifying a data file to be played back; a storage step of reading and storing a first table recorded on an information recording medium; a generation step of generating, based on the first table stored in the storage step, a second table in which unit recording area addresses of the information recording medium, which are used to record the data file specified in the specification step, are recorded in the forward direction; a holding step of holding the second table generated in the generation step; a reading step of reading the data from the information recording medium in accordance with the specified unit recording area addresses; and an indication step of indicating, to the reading step, the unit recording area addresses to be read by referring to the second table held in the holding step.
- the program of the recording medium of the present invention includes a storage step of reading and storing a first table recorded on the information recording medium; a generation step of generating, based on the first table recorded in the storage step, a second table in which unit recording area addresses of the information recording medium, which are used to record the data file specified in the specification step are recorded in the forward direction; a holding step of holding the second table generated in the generation step; a reading step of reading the data from the information recording medium in accordance with the specified unit recording area addresses; and an indication step of indicating, to the reading step, the unit recording area addresses to be read by referring to the second table held in the holding step.
- the program of the present invention enables a computer to perform processing including a storage step of reading and storing a first table recorded on the information recording medium; a generation step of generating, based on the first table recorded in the storage step, a second table in which unit recording area addresses of the information recording medium, which are used to record the data file specified in the specification step are recorded in the forward direction; a holding step of holding the second table generated in the generation step; a reading step of reading the data from the information recording medium in accordance with the specified unit recording area addresses; and an indication step of indicating, to the reading step, the unit recording area addresses to be read by referring to the second table held in the holding step.
- the first table recorded on the information recording medium is read and stored. Based on the first stored table, a second table is generated in which unit recording area addresses of the information recording medium, which are used to record the specified data file, are recorded in the forward direction. Then, the unit recording area addresses to be read are indicated by referring to the second table. On the basis of the indication, the data file is read from the information recording medium.
- the playback apparatus may be an independent apparatus or may be blocks for performing a recording/playback apparatus.
- FIG. 1 shows sectors, which are physical recording units of an information recording medium, and clusters, which are logical recording units thereof.
- FIG. 2 shows a state in which a file is divided into a plurality of clusters and is recorded.
- FIG. 3 shows an example of an FAT corresponding to the state shown in FIG. 2 .
- FIG. 4 illustrates a case in which normal playback is performed by referring to the FAT.
- FIG. 5 illustrates a case in which fast forward playback is performed by referring to the FAT.
- FIG. 6 illustrates a case in which fast backward playback is performed by referring to the FAT.
- FIG. 7 is a block diagram showing an example of the configuration of an AV playback apparatus according to an embodiment of the present invention.
- FIG. 8 shows file playback information generated on the basis of the FAT shown in FIG. 3 .
- FIG. 9 is a flowchart illustrating a playback pre-processing of the AV playback apparatus.
- FIG. 10 illustrates a case in which normal playback is performed by referring to the file playback information.
- FIG. 11 illustrates a case in which fast forward playback is performed by referring to the file playback information.
- FIG. 12 illustrates a case in which fast backward playback is performed by referring to the file playback information.
- the AV playback apparatus is designed to be capable of reading streaming data of an AV signal recorded on an information recording medium 8 ( FIG. 7 ) in compliance with the FAT scheme continuously without delay even in the case of normal playback, fast forward playback, or fast backward playback.
- a file A which is the streaming data of an AV signal, is recorded in the state shown in FIG. 2 . Furthermore, on the information recording medium 8 , the FAT in the state shown in FIG. 3 containing the information regarding the file A recorded in the state shown in FIG. 2 , is recorded.
- FIG. 7 shows an example of the configuration of an AV playback apparatus.
- a CPU (Central Processing Unit) 1 controls a drive 2 via a CPU bus 4 in order to read a controlling program stored on a recording medium 3 formed of, for example, a magnetic disc, an optical disc, an optical magnetic disc, or a semiconductor memory, and to control the starting and ending of the operation of each section of the video playback apparatus in response to the read controlling program and the operation information of a user, which is input via the CPU bus 4 from an operation input section 5 .
- a recording medium 3 formed of, for example, a magnetic disc, an optical disc, an optical magnetic disc, or a semiconductor memory
- the CPU 1 generates file playback information on the basis of the FAT (or the partial FAT) copied from the information recording medium 8 to a DRAM 6 for work, and stores it in a DRAM 7 for file playback information.
- the process for generating the file playback information is referred to as a playback pre-processing.
- the CPU 1 detects the cluster address of the cluster in which data to be read is written by referring to the file playback information of the DRAM 7 for file playback information, and transmits the cluster address together with the read command to a reading section 9 via the CPU bus 4 .
- a control signal between the CPU 1 and each section is communicated to the CPU bus 4 .
- the communication of the streaming data, etc., among the sections is directly performed by the handshake method using an enable signal without being controlled by the CPU 1 or without the intervention of the CPU bus 4 .
- the operation input section 5 is formed of a user interface such as operation buttons.
- the operation input section 5 accepts an operation input from the user (an operation for turning on/off the power supply, an operation for specifying a file to be played back, an operation for instructing normal playback, an operation for instructing fast forward playback, an operation for instructing fast backward playback, etc.), and outputs it as operation information to the CPU 1 via the CPU bus 4 .
- the work DRAM 6 is a memory in which the FAT recorded on the information recording medium 8 is temporarily copied.
- the work DRAM 6 is also used as a work area when the CPU 1 generates file playback information on the basis of the copied FAT.
- the size of the FAT recorded on the information recording medium 8 is larger than that of the work DRAM 6 , a partial FAT is copied into the work DRAM 6 .
- the file playback information generated by the CPU 1 is stored.
- FIG. 8 shows the file playback information generated to play back the file A on the basis of the FAT shown in FIG. 3 .
- the cluster addresses of the clusters used to record the corresponding files are recorded in sequence in the order in which they are used. For example, as shown in FIG. 8 , in the file playback information of the file A, cluster addresses CL 1 , CL 2 , CL 3 , . . . , CL 329 , CL 330 , at which the files A- 1 to A- 18 forming the file A are recorded, are recorded. Following the cluster address CL 330 , an EOF is recorded.
- the size of the DRAM 7 for file playback information for storing the file playback information is considered.
- the maximum size of one file is limited to 4 gigabytes.
- a single DRAM may be provided so that it is divided into an work area corresponding to the work DRAM 6 and an area corresponding to the DRAM 7 for file playback information and is used.
- the information recording medium 8 is formed of a hard disk formatted on the basis of the FAT scheme, and the directory entries and the FAT in addition to the file of an AV signal are recorded in a predetermined recording area thereof.
- the information recording medium 8 may be fixed to or removable from the AV playback apparatus.
- the reading section 9 Based on the read command input from the CPU 1 via the CPU bus 4 , the reading section 9 reads data forming the directory entries, the FAT (or the partial FAT), or a file of an AV signal from the cluster address, specified by the CPU 1 , of the information recording medium 8 .
- the read directory entry is referred to by the CPU 1 .
- the read FAT (or partial FAT) is stored in the work DRAM 6 .
- the data forming the read file of the AV signal is buffered in a DRAM 11 of a buffer section 10 .
- the buffer section 10 incorporates the DRAM 11 .
- the buffer section 10 supplies the data forming the file of the AV signal buffered in the DRAM 11 , as streaming data, to a DEMUX section 12 .
- the buffer section 10 requests the CPU 1 to read the data so as to maintain the state in which a predetermined amount of data is buffered in the DRAM 11 .
- the buffer section 10 being provided, even when the reading of the data of the AV signal is delayed, it is possible to compensate for the delay.
- the DEMUX section 12 separates video coded data and audio coded data from the streaming data supplied from the buffer section 10 , and outputs them to a decoding section 13 .
- the decoding section 13 decodes the video coded data and the audio coded data, and outputs the obtained video signal and audio signal to a baseband processing section 14 .
- the baseband processing section 14 performs predetermined processing (for example, processing for conversion into an NTSC format) on the video signal input from the decoding section 13 , and outputs it to a display section 15 . Furthermore, the baseband processing section 14 performs a filtering process on the audio signal input from the decoding section 13 and outputs it to a speaker (not shown), etc.
- the display section 15 displays the video of the video signal input from the baseband section 14 .
- This playback pre-processing is started when a file to be played back is specified by a user (for example, the file A is specified).
- step S 1 the CPU 1 controls the reading section 9 in order to read the directory entries of the information recording medium 8 and to obtain the start cluster address (in this case, the cluster address CL 1 ) of the file A.
- the directory entries of the information recording medium 8 may be copied in the work DRAM 6 , so that the start cluster address of the file A is obtained from the directory entries of the work DRAM 6 .
- step S 2 the CPU 1 records the start cluster address CL 1 of the file A obtained in the process of step S 1 into the beginning of the file playback information of the file A generated in the DRAM 7 for file playback information.
- step S 3 the CPU 1 controls the reading section 9 in order to copy, to the work DRAM 6 from the information recording medium 8 , the partial FAT containing the FAT address 1 corresponding to the cluster address CL 1 at the start of the file A.
- the partial FAT that contains the FAT addresses 0 to 9 and that does not contain the FAT address 110 and subsequent addresses is copied.
- step S 4 the CPU 1 obtains the next cluster address following the start cluster address CL 1 by referring to the partial FAT of the work DRAM 6 .
- the FAT address 1 of the partial FAT is referred to, and the cluster address CL 2 is obtained.
- step S 5 the CPU 1 records the information obtained in the process of step S 4 into the file playback information of the file A in the DRAM 7 for file playback information.
- the cluster address CL 2 is recorded into the file playback information of the file A.
- step S 6 the CPU 1 determines whether or not the information recorded in the process of step S 5 is the next cluster address or the EOF. When it is determined that the information recorded in the process of step S 5 is the next cluster address, the process proceeds to step S 7 . Conversely, when it is determined that the information recorded in the process of step S 5 is the EOF, the playback pre-processing is completed.
- step S 5 since the information recorded in the process of step S 5 is the next cluster address CL 2 , the process proceeds to step S 7 .
- step S 7 the CPU 1 determines whether or not the FAT address corresponding to the next cluster address recorded in the process of step S 5 exists in the partial FAT of the work DRAM 6 .
- the process returns to step S 4 , and processing of step S 4 and subsequent steps is performed again.
- the process proceeds to step S 8 .
- step S 4 since the FAT address 2 corresponding to the next cluster address CL 2 exists in the partial FAT of the work DRAM 6 , the process returns to step S 4 , and processing of step S 4 and subsequent steps is performed again.
- step S 4 at the second time, the next cluster address CL 3 is obtained.
- step S 5 the cluster address CL 3 is recorded in the file playback information of the file A in the DRAM 7 for file playback information.
- step S 6 since it is determined that the information recorded in the process of step S 5 is the next cluster address CL 3 , the process proceeds to step S 7 .
- step S 7 since the FAT address 3 corresponding to the next cluster address CL 3 exists in the partial FAT of the work DRAM 6 , the process returns to step S 4 , and processing of step S 4 and subsequent steps is performed again.
- steps S 4 to S 7 are repeated three times.
- the cluster addresses CL 5 to CL 110 are recorded.
- step S 7 since it is determined that the FAT address 110 corresponding to the next cluster address CL 110 recorded in the process of step S 5 does not exist in the partial FAT of the work DRAM 6 , the process proceeds to step S 8 .
- step S 8 the CPU 1 controls the reading section 9 in order to copy, to the work DRAM 6 from the information recording medium 8 , the partial FAT containing the FAT address corresponding to the next cluster address.
- the partial FAT that contains the FAT addresses 110 to 119 and that does not contain the FAT address 320 and subsequent addresses is copied.
- step S 4 the process returns to step S 4 , and processing of steps S 4 to S 7 is repeated seven times.
- the cluster addresses CL 112 to CL 320 are recorded.
- step S 7 since the FAT address 320 corresponding to the next cluster address CL 320 recorded in the process of step S 5 does not exist in the partial FAT of the work DRAM 6 , the process proceeds to step S 8 .
- step S 8 at the second time it is assumed that the partial FAT containing the FAT addresses 320 to 330 is copied.
- step S 4 the process returns to step S 4 , and the above-described processing of steps S 4 to S 7 is repeated five times.
- the cluster addresses CL 323 to CL 330 are recorded.
- step S 4 the space of the FAT address 330 of the partial FAT is referred to obtain the EOF.
- step S 5 the EOF is recorded in the file playback information of the file A in the DRAM 7 for file playback information.
- the file playback information of the file A is completed in the DRAM 7 for file playback information.
- step S 6 since the information recorded in the process of step S 5 is the EOF, the playback pre-processing is completed. This completes the description of the playback pre-processing.
- the start timing of the playback pre-processing may be, rather than the time when the file to be played back is specified in the manner described above, when normal playback, fast forward playback, or fast forward playback is specified after the file to be played back is instructed.
- the file playback information that is once generated in the DRAM 7 for file playback information is erased when the power supply is turned off or when another file is specified and the playback pre-processing is started. Therefore, to prevent this erasure, the file playback information may be stored in any non-volatile memory or in the information recording medium 8 .
- the CPU 1 reads the file playback information for each cluster address in the forward direction from the top toward the bottom, and notifies the read cluster address, together with the read command, to the reading section 9 .
- the cluster addresses of all the clusters, in which the files A- 1 to A- 18 forming the file A are recorded are recorded in the forward direction of playback. Consequently, the problems when the partial FAT described with reference to FIG. 4 is used do not occur.
- the present invention can be applied to, in addition to the AV playback apparatus, which is the embodiment of this invention, an AV recording/playback apparatus having a recording function.
- the present invention can be applied to not only an apparatus for playing back the streaming data of an AV signal, but also an apparatus for reading other streaming data.
- the present invention can be applied to an apparatus for recording any kind of data on an information recording medium formatted by the FAT scheme.
- a program forming the software is installed from a recording medium (for example, the recording medium 3 of FIG. 7 ) into a computer (for example, the CPU 1 of FIG. 7 ) incorporated into dedicated hardware or into, for example, a general-purpose computer capable of executing various kinds of functions by installing various kinds of programs.
- the recording medium is formed of a packaged medium formed of, for example, a magnetic disk (including a flexible disk), an optical disc (including a CD-ROM (Compact Disc-Read Only Memory) or a DVD (Digital Versatile Disc)), the magneto-optical disc (including an MD (Mini Disc)), or a semiconductor memory, in which programs are recorded, the recording medium being distributed to provide a program to a user separately from the computer.
- the recording medium is formed of a ROM, a hard disk drive, etc., in which programs are recorded, which are provided to the user by being preincorporated into the computer.
- steps for writing a program recorded on a recording medium may be executed chronologically according to the written orders. However, they do not have to be executed chronologically, and may be executed concurrently or individually.
- the present invention it is possible to read streaming data recorded on an information recording medium in compliance with the FAT scheme continuously without delay. Furthermore, according to the present invention, when the streaming data of an AV signal, etc., recorded on an information recording medium in compliance with the FAT scheme is to be played back at various speeds, it is possible that interruptions and losses do not occur in the video and audio.
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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
- Television Signal Processing For Recording (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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JP2002-235764 | 2002-08-13 | ||
JP2002235764A JP2004078409A (ja) | 2002-08-13 | 2002-08-13 | 再生装置および方法、記録媒体、並びにプログラム |
PCT/JP2003/008393 WO2004017323A1 (fr) | 2002-08-13 | 2003-07-02 | Procede et dispositif de reproduction, support d'enregistrement et programme |
Publications (1)
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US20050259542A1 true US20050259542A1 (en) | 2005-11-24 |
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ID=31884387
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US10/524,444 Abandoned US20050259542A1 (en) | 2002-08-13 | 2003-07-02 | Reproduction device and method, recording medium, and program |
Country Status (5)
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US (1) | US20050259542A1 (fr) |
JP (1) | JP2004078409A (fr) |
KR (1) | KR20050055707A (fr) |
CN (1) | CN1685435A (fr) |
WO (1) | WO2004017323A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040158670A1 (en) * | 2003-02-07 | 2004-08-12 | Shuji Ohbayashi | Electronic device and playback control method therefor |
EP2388706A1 (fr) * | 2010-05-21 | 2011-11-23 | Thomson Licensing | Procédé et système de diffusion en continu en temps réel et de stockage |
US20110307657A1 (en) * | 2010-06-14 | 2011-12-15 | Veeam Software International Ltd. | Selective Processing of File System Objects for Image Level Backups |
US10157103B2 (en) | 2015-10-20 | 2018-12-18 | Veeam Software Ag | Efficient processing of file system objects for image level backups |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100678888B1 (ko) * | 2004-07-19 | 2007-02-05 | 삼성전자주식회사 | 정보를 기록하고 읽는 장치 및 방법 |
CN100583278C (zh) * | 2005-03-04 | 2010-01-20 | 松下电器产业株式会社 | 数据处理装置 |
JP2007199934A (ja) * | 2006-01-25 | 2007-08-09 | Sony Corp | データ蓄積装置及びデータ読出し方法 |
JP2010211880A (ja) * | 2009-03-11 | 2010-09-24 | Sharp Corp | ディスクドライブ装置、その制御方法、プログラム、及び、記録媒体 |
CN102387347A (zh) * | 2011-10-19 | 2012-03-21 | 何进波 | 基于ip-san直存技术的视频存储及即时回放系统 |
CN103593407B (zh) * | 2013-10-17 | 2017-01-04 | 上海亨钧科技有限公司 | 一种数据文件的存储以及回放方法 |
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JP2000354224A (ja) * | 1999-01-01 | 2000-12-19 | Hitachi Ltd | 画像データ記録方法および光ディスク再生方法 |
JP2000276851A (ja) * | 1999-03-23 | 2000-10-06 | Toshiba Video Products Japan Kk | デジタルデータ再生装置 |
JP2002149453A (ja) * | 2000-11-08 | 2002-05-24 | Nec Corp | 情報再生方法及び再生装置 |
JP3852693B2 (ja) * | 2002-03-19 | 2006-12-06 | ソニー株式会社 | 情報処理装置および方法、記録媒体、並びにプログラム |
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2002
- 2002-08-13 JP JP2002235764A patent/JP2004078409A/ja active Pending
-
2003
- 2003-07-02 WO PCT/JP2003/008393 patent/WO2004017323A1/fr active Application Filing
- 2003-07-02 CN CNA038232391A patent/CN1685435A/zh active Pending
- 2003-07-02 KR KR1020057002276A patent/KR20050055707A/ko not_active Application Discontinuation
- 2003-07-02 US US10/524,444 patent/US20050259542A1/en not_active Abandoned
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US6002834A (en) * | 1995-02-24 | 1999-12-14 | Hitachi, Ltd. | Optical disk having table relating sector address and time and optical disk reproducing apparatus |
US20030126390A1 (en) * | 2001-12-28 | 2003-07-03 | Hui-Chieh Huang | Method for securing stored data from access by unspecified computer |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040158670A1 (en) * | 2003-02-07 | 2004-08-12 | Shuji Ohbayashi | Electronic device and playback control method therefor |
US7155596B2 (en) * | 2003-02-07 | 2006-12-26 | Sony Corporation | Electronic device and playback control method therefor |
EP2388706A1 (fr) * | 2010-05-21 | 2011-11-23 | Thomson Licensing | Procédé et système de diffusion en continu en temps réel et de stockage |
US20110307657A1 (en) * | 2010-06-14 | 2011-12-15 | Veeam Software International Ltd. | Selective Processing of File System Objects for Image Level Backups |
US9507670B2 (en) * | 2010-06-14 | 2016-11-29 | Veeam Software Ag | Selective processing of file system objects for image level backups |
US20170075766A1 (en) * | 2010-06-14 | 2017-03-16 | Veeam Software Ag | Selective processing of file system objects for image level backups |
US20190332489A1 (en) * | 2010-06-14 | 2019-10-31 | Veeam Software Ag | Selective Processing of File System Objects for Image Level Backups |
US11068349B2 (en) * | 2010-06-14 | 2021-07-20 | Veeam Software Ag | Selective processing of file system objects for image level backups |
US20220156155A1 (en) * | 2010-06-14 | 2022-05-19 | Veeam Software Ag | Selective processing of file system objects for image level backups |
US11789823B2 (en) * | 2010-06-14 | 2023-10-17 | Veeam Software Ag | Selective processing of file system objects for image level backups |
US10157103B2 (en) | 2015-10-20 | 2018-12-18 | Veeam Software Ag | Efficient processing of file system objects for image level backups |
Also Published As
Publication number | Publication date |
---|---|
WO2004017323A1 (fr) | 2004-02-26 |
KR20050055707A (ko) | 2005-06-13 |
JP2004078409A (ja) | 2004-03-11 |
CN1685435A (zh) | 2005-10-19 |
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